Manuscript Summary: Natural history (scientific) manuscript compilation, written by various scribes, mostly around the year 850, in the area of Laon in northern France. The codex contains, among other items, Boetheus's De arithmetica, a computational treatise incorrectly attributed to the English scholar the Venerable Bede († 735), and De temporum ratione as well as selections from De natura rerum and De temporibus, all true works of the Venerable Bede. (smu)